| Prof. Charles F. Himes [Attributed to] [Holtz machine with vertical rod] 1876 Stereoview Library of Congress, Prints and Photographs Division Reproduction Number: LC-DIG-stereo-1s01526 (digital file from original photo, front) LC-DIG-stereo-2s01526 (digital file from original photo, back) LL/109294 Attribution to Himes based on his position at Dickinson College.
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